Add the '--enable-avx2' & '--disable-avx2' option so as to config
the AVX2 instruction optimization.
If '--disable-avx2' is not set, configure will detect if the compiler
can support AVX2 option, if yes, AVX2 optimization is eabled, else
disabled.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
configure | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/configure b/configure
index 394db3b..94e45fa 100755
--- a/configure
+++ b/configure
@@ -311,6 +311,7 @@ libusb=""
usb_redir=""
opengl=""
ifunc=""
+avx2=""
zlib="yes"
lzo=""
snappy=""
@@ -1063,6 +1064,10 @@ for opt do
;;
--enable-usb-redir) usb_redir="yes"
;;
+ --disable-avx2) avx2="no"
+ ;;
+ --enable-avx2) avx2="yes"
+ ;;
--disable-zlib-test) zlib="no"
;;
--disable-lzo) lzo="no"
@@ -1378,6 +1383,7 @@ disabled with --disable-FEATURE, default is enabled if
available:
smartcard smartcard support (libcacard)
libusb libusb (for usb passthrough)
usb-redir usb network redirection support
+ avx2 support of avx2 instruction
lzo support of lzo compression library
snappy support of snappy compression library
bzip2 support of bzip2 compression library
@@ -1841,6 +1847,23 @@ else
ifunc="no"
fi
+########################################
+# avx2 check
+
+if test "$avx2" != "no" ; then
+ cat > $TMPC << EOF
+int main(void) { return 0; }
+EOF
+ if compile_prog "" "-mavx2" ; then
+ avx2="yes"
+ else
+ if test "$avx2" = "yes" ; then
+ feature_not_found "avx2" "Your compiler don't support avx2"
+ fi
+ avx2="no"
+ fi
+fi
+
#########################################
# zlib check
@@ -4853,6 +4876,7 @@ echo "TPM passthrough $tpm_passthrough"
echo "QOM debugging $qom_cast_debug"
echo "vhdx $vhdx"
echo "ifunc support $ifunc"
+echo "avx2 support $avx2"
echo "lzo support $lzo"
echo "snappy support $snappy"
echo "bzip2 support $bzip2"
@@ -5241,6 +5265,12 @@ if test "$ifunc" = "yes" ; then
echo "CONFIG_IFUNC=y" >> $config_host_mak
fi
+if test "$avx2" = "yes" ; then
+ avx2_cflags=" -mavx2"
+ echo "AVX2_CFLAGS=$avx2_cflags" >> $config_host_mak
+ echo "CONFIG_AVX2=y" >> $config_host_mak
+fi
+
if test "$lzo" = "yes" ; then
echo "CONFIG_LZO=y" >> $config_host_mak
fi
--
1.9.1
